Burner for incandescent bodies.



I G. DALE N. BURNER FOR INCANDESCENT BODIES.

APPLICATION FILED MAY 2. 1916.

Patented Sept. 3, 1918.

VII

Int mm": "G

Attorney.

In: NORRIS rrrshs ca, PNOYD-l 1040.. WASNINGYDN. u c.

GUSTAF DALEN, or SKARSATIRA, Lmmeo, STOCKHOLM, SWEDEN.

BURNER FOR INCANDESCENT BODIES.

vApplication filed May 2, 1916. Serial No. 94,890.

To all whom it may concern:

Be it known that I, GUsTAF DALIiN, a subject of the King of Sweden,residing at Skarsatra, Lidingo, Stockholm, Sweden, have invented new anduseful Improvements in Burners for Incandescent Bodies, of which thefollowing is a specification.

The present invention refers to gas burners, provided with incandescentbodies, es pecially burners of that type, which are employed in searchlight apparatus, and the invention has for its object to establish alarge dispersion of the light bundle in a certain desired direction, sayin a horizontal direction. Hitherto for this purpose the burner and theincandescent body have been placed at a distance from the focus, butsuch an arrangement has the inconvenience, that the light intensity isconsiderably diminished. obviate said inconvenience, and also to easilyvary the light intensity.

On the drawing Figure 1 is a front View of the burner and itsincandescent body. Fig. 2 is a side View of the same.

1, 2 and 3 indicate three burners or outflow openings for a gas mixture,say a mixture of acetylene and oxygen, said burners being placed withtheir openings horizontally side by side.

duit 4, whereas the intermediate burner 2 is by hand or by means of ascrew or the like.

' The holder 6 itself may be mounted slidably in a similar manner ifdesired. Instead of making the incandescent body in three parts, thesamemay be made in one single piece. If the incandescent body is made inseveral parts, said parts abut one another as shown on the drawing. Nointerruption of the Copies Specification of Letters Patent.

The purpose of the invention is to The two outer burners 1 s and 3 areconnected with a common gas con- 01 this pstent may be obtained for livecents each, by addressing the Patented Sept. 3, 1918.

light bundle is caused by such an arrangement of the incandescent body,which has the advantage, that a defective part of the incandescent bodycan be'exchanged without throwing away the whole incandescent I body. Bymoving the body laterally, new

parts of the body are employed successively.

When a light bundle with large dispersion in horizontal direction isdesired, all the burners or outflow openings 1, 2, 3 are employedsimultaneously. When it'i's desired to limit the light intensity, theconduit 4-. is shut ofi by means of the stop cock 10, so

that only the intermediate burner 2 is operating. Its conduit 5 isprovided with a special stop cock 11.

Having now described my invention and ascertained in what manner thesame is to be performed, what I claim is:

1. In gas burners, cooperating with incandescent bodies, the combinationof a plurality of parallel burner nozzles, placed side by side inalinement with one another, and a common incandescent body, made in aplurality of rectangular pieces, abutting one another with their sideedges, the flames burning in said burners striking each of said pieceson one side only. I

2. In gas burners, cooperating with incandescent bodies, the combinationof a plurality of burner nozzles placed side by side in alinement withone another, a common incandescent body, the outer burner nozzles beingconnected with a gas conduit, and the intermediate burner nozzle beingconnected with another gas conduit, said gas conduits each beingprovided with a cutting off device;

In testimony whereof I have signed my name to this specification in thepresence 0 two subscribing witnesses. I

' GUSTAF DALEN.

Witnesses:

WALDEMAR ,BOMAN, A. BIOROK.

commissioner of Patents,

Washington, D. 0."

